autotroph vs autotrophic organism

autotroph and autotrophic organism both are nouns.

Word	Noun	Adjective	Verb	Adverb
autotroph	Yes	No	No	No
autotrophic organism	Yes	No	No	No

As nouns, autotroph and autotrophic organism are synonyms defined as:

autotroph and autotrophic organism: plant capable of synthesizing its own food from simple organic substances

Other synonyms of autotroph include autophyte, autophytic plant.

autotroph (noun)	autotrophic organism (noun)
plant capable of synthesizing its own food from simple organic substances	plant capable of synthesizing its own food from simple organic substances